Computing-machine.



No. 632,074. Patented Aug. 29, |899. J. J. wALL a H. RuGALsKY. COMPUTING MACHINE.

(Application filed May 27, 1899.) (No Model.) 2 Sheets-sheet L A ma/v5 ys.

No. 632,074. I Patented Aug.v 29, 1899. J. J. wALL & H. noGALsKY.

COMPUTING MACHINE.

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UNITED STATES PATENT OFFICE.

JOHNJ. VALL AND HERMAN ROGALSKY, OF EUHLER, KANSAS.

COMPUTING-MACHINE.

SPECIFICATION forming part of Letters 'Patent No. 632,074, dated August 29, 1899. Application filed May 27, 1899. Serial No. 718,582. (No model.)

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Be it known that we, JOHN J. TALL and HERMAN ROGALsKY, of Buhler, in the county of Reno and State of Kansas, have invented a new and useful Improvement in Computing- Machines, of which the following is a speci- Iieation` The object of our invention is to provide, for the use of merchant and custom millers and others, a convenient computing-machine for the purpose of finding out at a glance how many pounds of flouror feed are to be given in exchange for a certain amount of bushels or pounds of wheat at a certain number of pounds to the bushel, thus saving much valuable time in computing and also avoiding the possibility of error in separately `figuring the amounts.

It consists in a simple and convenient mechanical apparatus provided with suitable tables and arranged to be quickly adjusted to give the desired result, as will be hereinafter more fully described with reference to the drawings, in which-- Figure l is a front elevation of the machine. Fig. 2 is a front view with the casing removed. Fig. 3 is a vertical cross-section on line 3 3 of Fig. l, and Fig. +L shows the tables which are fixed upon the periphery of the cylinders in the machines, which tables are in this Iiguredisplayed as laid ont flat.

A A represent two end brackets which are secured to a back board B and an inclined shelf C, which, together with a slotted front board D and sheet-metal cover E, form the case of the machine. As shown, all the parts except the front cover E are made of wood;

but they may be made of metal or any other suitable material. The brackets are provided with screw-holes or other means for hanging the machine against a vertical wall, or the framework may be constructed with a base, so as to stand alone.

Within the hollow chamber of the case there is arranged a horizontal shaft F, journaled in bearings within the brackets, one of which is formed with a detachable upper section F to permit the shaft to be inserted or removed. On the outer end of this shaft there is a hand-wheel a or other suitable device for turning the shaft, and within the inclosure of the case the shaft carries a rigid short cylinder Gand a loose long` cylinder H. The rigid short cylinder G is near the end of the shaft inside one of the brackets, and the loose cylinder H slides longitudinally on the shaft, but revolves with it, such connection being secured by means of a groove g and feather g or by an angular shaft in a manner well known. Loosely connected to this cylinder and swiveling in a peripheral groove there is a ring or yoke R, which has a rigidlyattached arm fr, which protrudes through the horizontal slot b in the front board. This ring allows .the cylinder to turn within it; but when the ring is moved laterally by means of the arm r the cylinder is shifted longitudinally on the shaft. On the lower edge of the shelf C there are a series of pins c, marking subdivisions into which the arm o* is dropped according as the cylinder is shifted one way or the other.

Before describing the operation of this ma chine it will `iirst be necessary to understand the tables and their use, reference being had to Fig. e.

In the vertical columns the heading row of figures 25 to 36 represent the number of pounds of iiour per bushel. The side row X of figures at the top represent fractional `parts of a bushel or pounds of wheat from tive to sixty and the side row Y of iigures below it represent bushels of wheat from one to twenty-five. The intersection of the horizontal readings in the upper section with the vertical readings of that section will give the pounds of flour or fractions of a bushel, and the intersection of the horizontal readings of the lower section with the verticalreadings will give the pounds of iiour in bushels. To illustrate, let us suppose that a customer brings in wheat to be exchanged for flour on a basis of thirty pounds to the bushel and he has seven bushels and fifteen pounds of wheat. figures in the column Y we iind seven bushels, and running this horizontally to the heading of the vertical column indicating thirty pounds to the bushel we ind the amount in pounds is two hundred and ten pounds. Then finding in the column X above the fifteen pounds of wheat and running it to the vertical column indicating thirty pounds to the bushelA we find it is seven, which added to Looking down in the lower section of Y IOC) tu'o hundred and ten makes two hundred and i we claim as new, and desire to secure by Letseventcen pounds of fiour to be given the customerforhis seven bushels and fifteen pounds of Wheat. Now applying these tables to the cylinder of the machine the column of figures X and Y, indicating bushels of wheat and pounds of wheat or fractions of a bushel, is applied to the short cylinder G, so as to completely cover its periphery and form a rotary index. The main tables, Fig. 4, are applied to the periphery of the long cylinder H, so as to completely cover its surface, care being taken that the horizontal readings on the two cylinders are exactly opposite each other, as they are in Fig. 4. Now in the sheet-metal case there are two openings or windows o and u', of which ois opposite the periphery of the short cylinder G and w opposite the long movable cylinder. The spacing-pins c are numbered with the pounds per bushel from. 25 to 3G in opposite progression to the table-readings of Fig. 4, so that when the arm lr is shifted to the extreme left to the space 36 then the column-spacing on the cylinder on the extreme right will come opposite to the window un To operate the machine, all that is neces sary to do is to turn the cylinder by the external hand-wheel until the number of bushels of Wheat to be exchanged is observed through the opening o on the rotary index, and then the arm r being a-lready adjusted to the number of pounds to the bushel on the scale c the operator reads off at the opening w the number of pounds of flour. If fractions of a bushel in pounds are to be considered, the hand-Wheel is turned until the portion of the table X of the rotaryindex comes around and the readings are taken from this in the same Way.

It will be understood that the machine may be made of any size and its tables adapted to any range of use.

Having thus described our invention, What ters Patent, is-

l. A computing-machine comprising an inclosing casing, a rotary shaft, a loose cylinder bearing tables on its periphery and connected to the shaft so as to slide longitudinally thereon but revolve with it, means for adjusting it longitudinally, and a rotary index fixed rigidly to the shaft and related in its position to the longitudinal readings of the sliding cylinder substantially as and for the purpose described.

2. A computing-machine coinprising'an inclosing casing, a rotary shaft with means for turning it, a loose cylinder sliding on the shaft but turning with it and bearing tables as described, an arm loosely connected to the cylinder so as to move it without interfering vWith its rotation,an external set ofseats or subdivisions numbered as described and adapted to receive the arm, a rotary index fixed to the shaft rigidly and related to the longitudinal readings of the cylinder-tables, and an external case with openings or windows o a' su bstantially as and for the purpose described.

3. A computing-machine comprising an outer case having end brackets With journalbearings, and a front part with a longitudinal slot and two Windows o and w, a horizontal shaft F bearing rigid index-cylinder G, and a sliding table-cylinder arranged to revolve with the shaft, an arm having a swiv cling connection with the sliding cylinder and protruding through the horizontal slot, numbered subdivisions c arranged to receive the arm and locate the figures on the cylinder in relation to the Window o, and means forturning the shaft substantially as and for the purpose described.

JOHN J. WALL. HERMAN ROGALSKY. Witnesses:

P. T. EPP, PETER W. RATZLAFF. 

